Elbow connection for radiators.



J. J. STOGKDON.

ELBOW CONNECTION FOR RADIATORS.

APPLIOATION FILED JULY 26, 1905.

929696,D Patented Nov. 3, 1908.

JOSEIH J. S'IQCKDON, 0F SOMERVILI, MASSACHUSETTS.

ELBOW CNNECTION )FOR RADIATGRS.

Specification.v of Letters Patent Patented Nov. 3,`190.

Application mea. my 2c, 1905. seria 10.271,378.

\ tachable connection 10 is employed, said con1 nection being applied atone endl to the radi'- ator, and communicating with a small port or vent11 thereof, as illustrated in Fig. 1,

and the port 6 in the diaphragm 5v is closed To all lwhom 'it mayconcern: i

Be it known that I, JOSEPH J. S'rooKDoN, a citizen of the United States,residing at Somerville, in the county of Middlesex and State ofMassachusetts, have invented certain new l and useful Improvements inElbow Connecby the screw or other device 7. tions for Radlators, ofwhich the following is When vapor is employed as the heating agent, theport 6 is left open, the steam-coa nection 10 is removed, .andv theopening through which said connection was attached to the elbow isclosed by a screw-plug 12, as illustrated in Fig. 2.

In the vapor or low-pressure system, as in the steam-heating system, theexhaust from theradiators occurs through the elbow 2, and in thesteam-heating system it is important to permit air contained'in theradiators to be driven off through the vent 11, pipe 1() and the elbowdescribed.

' Steam as it leaves the radiators is con,- densed, and the water ofcondensation en-l ters the trap 4, and seals the elbow. important ineither system to provide a large conduit in the elbow for the receptionof the water of condensation, and also for air dislaced from theradiator by the entrance of the heating agent therein.

' When the low pressure or vapor system is employed the conduit 10 isremoved from the art of .theradiatorcontainmg the vent l 1 t e holeinthe elbow is closed by, the plug 12, and the port in diaphragm 5 isopened by withdrawing the screw or other device 7, the result being thatwater of condensation from the radiators will pass through said elbow',fill and seal the trap 4, and be conveyed to the return pipe, the airdriven ofi by the vapor escaping over the trap through the opening 6,and the pressure being below that of the atmosphere but a small amountfoi' vapor will follow the air through the small vent 6. 1

In order to' provide as large a space as possible for the water ofcondensation and Jfor the air and steam discharged through the smallport 11, I have illustrated in Fig. 3, a modification of the elbowchamber 13 is formed therein. In ,this modiiication the return-pipe is.designated by 14, and is shown provided with a circular boss orenlargement 15, eX- ternally v threaded to receive an .internal aspecification.

This invention relates to elbow connections in the return-pipes fromradiators heated by either the vapor or the steam system, and has forits object the provision of an improvement in the elbow, whereby it maybe connected with 'a radiator heated by either of the sysl temsdescribed, and will serve to conduct the exhaust from the radiator to apipe leading to another part of the system.

A further object of the invention is the provision in an elbow providedwith a trap and a diaphragm above said trap, of a device'for closing aport in the diaphragm when the steam system is employed, and for openingsaid port when the steam connection is omitted an'd the vapor-system isin use.

In the accompanying drawings, Figure 1 is a side view partially inlongitudinal, vertical section of one form of the invention, showing thedetachable steam-connection, the vent in the diaphragm and the screwbein enlarged. Fig. 2 is a longitudinal, vertica section illustratingthe invention as it ap ears when the steam-connection is omitted thevent in the diaphragm also being enlarged; and Fig. 3 is a view similarto Fig. 1 ,showing a modiiied form of elbow.

Like numerals designate similar parts. throughout the several views.

Referring to the drawings, the numeral 1. designates aradiator of anydesired kind, and 2 an elbow showing my improvement applied thereto,said elbow being threaded into the radiator, as at 8, and containing atrap or ocket 1, above w `ch, in the construction illustrated in Figs. 1and 2 ,is disposed ,a diaphragm or partition 5. In this diaphragm isormed a ort 6 shown enlarged, which is left open as ilustrated in Fig.2, when what *is known as the va or-system is employed for heating thera iators, and is closed b a screw or other device 7, when steam athigiier than atmospheric pressure is employed as the heating-agent. Tothe elbow is attached, by an ordinary coupling, a conduit 9 leading toany desired point, for-instance, the returnpipe of the system.

When used with the steam-system a deadjacent to said chamber. mentprovides Jfree space for the discharge of water of condensation, and theair or small.

from the radiators in which a circular thread 16 on a reducedend 13 ofthe elbow] i This enlarge` amount of steam passing through the vent 11.In the modification the return-pipe 14 may be of any desired capacit andis curved downward at 14 to dischar e the water of condensation from thera iators into the trap 17, and the screw 7 is inserted into a port 6 ona line parallel to the inner wall 18 of the discharge end of the elbow,as illustrated in Fig. 3,-said screw being located above the water-lineof the trap. By forming the chamber 13 in the elbow as illustrated insaid Fig. 3, space is also afforded for the reception of the return-pipe14, and for enabling the elbow to be readily placed in position uponsaid pipe.

When it is desired to detach the screw 7, this can readily be effectedby removing the coupling 8, and inserting a screw-driver through thebore of the elbow, to engage the head of said screw.

Any Jform of closure may be employed as a means for opening or closingthe port 6 in either the diaphragm 5, or the return-connection 14,without departure from the invention.

By the simple construction shown, heating systems already established mabe readily provided with the improved e bow, and these elbows, in eitherform illustrated and described, may be made of any desired dimensions orsizes to suit the capacity of the radiator.

Changes may be made in the form and portions of my. improvement, withoutdearture from the invention which is not imited to the exactconstruction shown and described. So too, the form of the tra in theelbow may be variously modified, desired, and still be wi' hin thepurview of the invention in either form shown.

Having thus described my invention, what I claim isf l 1. A trap havingan inlet, an outlet, a diaphragm between the inlet and the outlet, and asecond inlet between said diaphragm and said outlet, said second inletbeing adapted to receive a ipe and the diaphragm being provided wit anopening adapted to be closed.

2. A trap having an inlet, an outlet, va diaphragm between the inlet andthe outlet,v and a second inlet between said diaphragm and I said outletsaid second inlet bein adapted toreceive a pipe, the diaphragm aving anopening adapted to be closed, and said tra having a depressed portiontoward whicii said diaphragm is extended.

In testimony whereof I aliX my signature in presence of two witnesses.

JOSEPH J. STOCKDON.

pro-

l l Witnesses:

i F. E. ANDERSON,

I WM. H. BLODGETT, Jr.

